Digitale, apparently you are not the only one. Do a Google search on that particular problem. Most of them are resolved by doing a clean install of Win Vista, let all the drivers install, then install win 7 update. Or you can try this, download the HP Compaq nx6125 Notebook PC*-* Conexant AC97 Audio Driver for Microsoft Vista (32-bit) from here Extract but dont install. Go to c:swsetup and rename the 2 files: camc6aud.sys and camc6hal.sys to camcaud.sys and camchal.sys and copy them to c:windowssystem32drivers and restart the laptop.